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DairyTalk 235: When Genomics Beat Tradition: How Holsteins Took Over A2 - by Helmut Demmelhuber
The global A2 milk market is booming, yet heritage breeds like Guernsey, long known for naturally carrying the A2 gene, failed to benefit. The reason lies not in genetics, but in market mechanics. High-volume Holstein operations rapidly adopted genomic selection to convert herds to A2, effectively eliminating the niche advantage. At the same time, small farms struggled with processing barriers, as most dairies require large minimum volumes for separate A2 runs. As a result, successful heritage breeders are exiting bulk pools and turning to on-farm processing and direct-to-consumer models…
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